62% (1987)

61% (1969)

0% (1961)

37% (1990)

70% (1974)

61% (1980)

48% (1955)

72% (1957)

53% (1964)

60% (1985)

53% (1970)

42% (1960)

0% (1984)

20% (1989)

57% (1987)

75% (1986)

46% (1989)

54% (1955)

43% (1977)

48% (1986)